Combine the kosher salt, freshly ground black pepper, onion powder, and garlic powder in a small bowl or ramekin. Mix well.
Trim any excess fat and skin from the thighs. Using a meat tenderizer, pierce the skin of all the thighs.
Dust the chicken thighs with the rub on one side. Then turn them over and dust the other side.
Pull the skin taut so it’s even and tucked in as best as possible. Allow them to rest for an hour before cooking.
Set your smoker or grill to 425 degrees. Put the chicken thighs into the grill or smoker when it hits temperature.
Cook at 425 degrees Fahrenheit for approximately 30 minutes. Use a meat thermometer (close to the bone) to check the internal temperature.
Remove from the heat when they reach 160 degrees F. and apply your bbq sauce to all sides of the chicken thighs and return to the grill.
Continue to cook for approximately 10 minutes for the sauce to tack up. Check the internal temperature and when they hit 180 degrees they’re ready.
Optionally, reapply barbecue sauce and put them back in for 10 minutes for a stronger BBQ taste.
Remove the chicken thighs from the grill (or smoker) and allow to rest for at least 5 minutes before serving.
Serve with your favorite sides.